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15-minute crypto price markets surge as Coinbase offers Kalshi-powered contracts
- 15-minute crypto price markets surge as Coinbase offers Kalshi-powered contracts — The Motley Fool reported that five- to 15-minute contracts made up more than half of crypto betting on Kalshi and Polymarket as of March 2026. Coinbase began offering 15-minute crypto prediction contracts on October 6 using Kalshi infrastructure. (The Motley Fool)
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